- Is the error LED on the ACX781 linked to the errors system variable in the controller?
- What events constitute and error that would cause the LED to be illuminated?
- How is the nature of the controller error determined?
- Can this value (and the error LED) be cleared by setting it back to 0?
- Error Light
The error led is associated with the errors system variable.
Try using Command Line to set the Errors system variable to 0 and see if the error led goes away.
The most common reason why the error would be non-zero is because there is a program that went disabled.